#!/usr/bin/node

const argv=process.argv,
      log=console.log;
//validate 
////1argv number equal 3
if(argv.length!==3){
  log('cmd-exit-code');
  process.exit(1);
}
//code type is number NaN
if(isNaN(Number(argv[2]))){
  log('argv must be number');
  process.exit(2);
}
//code range > 0
if(Number(argv[2])<0){
  log('argv must > 0');
  process.exit(3);
}

process.exit(argv[2]);

